囊性星形细胞瘤占儿童后颅窝肿瘤的33%。
Cystic cerebellar astrocytoma comprises about 33% of all posterior fossa tumors in children.
目的探讨弥漫性星形细胞瘤的MRI表现特点，研究MRI对该类肿瘤的诊断要点和价值。
Objective To study specific features and main diagnostic points of diffuse astrocytoma on MRI.
结论MMP - 2、TIMP - 1和TIMP - 2在星形细胞肿瘤组织中的表达与星形细胞肿瘤的侵袭性生物学行为的演进密切相关。
ConclusionThe expression of MMP-2, TIMP-1 and TIMP-2 are closely correlated with the development of the invasive activity of human astrocytoma.
结果：星形细胞瘤15例，单发转移性肿瘤10例，血管母细胞瘤8例，髓母细胞瘤6例，恶性淋巴瘤2例，室管膜瘤1例。
Results:Among them, 15 astrocytomas, 10 solitary intracranial metastatic tumors, 8 hemangioblastomas, 6 medulloblastomas, 2 lymphomas and 1 ependymoma.
CD 133抗体不是脊髓弥漫性星形细胞瘤干细胞唯一的标记物，呈阴性表达的肿瘤细胞也可增殖成瘤。
CD133 antibody is not the unique spinal cord astrocytomas stem cells marker, CD 133 negative tumor cells can also be proliferation into the xenograft.
方法回顾性分析经手术病理证实的20例少突-星形细胞肿瘤的CT和MRI表现。
Methods CT and MRI findings in 20 patients of oligoastrocytic tumors proved with operation and pathology were analyzed retrospectively.
结论MMP - 2、TIMP - 1和TIMP - 2在星形细胞肿瘤中的表达与星形细胞肿瘤的侵袭性生物学行为的演进亲密相关。
Conclusion the overexpression of MMP-2, TIMP-1 and TIMP-2 are closely correlated to development of the invasion activity of human astrocytoma.
结论MMP - 2、TIMP - 1和TIMP - 2在星形细胞肿瘤中的表达与星形细胞肿瘤的侵袭性生物学行为的演进亲密相关。
Conclusion the overexpression of MMP-2, TIMP-1 and TIMP-2 are closely correlated to development of the invasion activity of human astrocytoma.
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